A man was shot to death in the hallway of a Ditmas Park apartment building, authorities said.

Police found the body of Juny Reyes, 26, face down in the stairwell between the first and second floors of the building on Atlantic Avenue near Cortelyou Road at about 8:40 p.m. Thursday, police said.

The victim, shot in the face, was pronounced dead at the scene, police said.

Officers also discovered an empty apartment with its door left open in the building and are looking to question the resident of that unit, police sources said.

Reyes had five prior arrests, including a 2007 rap for criminal possession of a weapon, cops said.

The other cases had been sealed.

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An unknown gunman wounded three men in Brownsville yesterday, police said.

The shooting took place at Livonia and Rockaway avenues at about 10:45 a.m., cops said.

The victims were taken in serious condition to Brookdale Hospital and are expected to survive.

The motive was not immediately clear, and no arrests have been made.

Manhattan

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Despite his headwear, he’s no angel.

A thief in an LA Angels baseball cap and an accomplice (both pictured at left) robbed a man at knifepoint at an Upper West Side subway station, police said.

The suspects approached the victim, 38, on Nov. 20 at the 72nd Street/Central Park West station on the B and C lines and flashed a weapon, cops said.

The two made off with the victim’s wallet and iPhone, cops added.

Staten Island

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An ongoing clash between neighbors left one man dead and his brother fighting for his life yesterday in Port Richmond, authorities said.

Brothers Joseph Brown, 20, and Jemel Porter, 21, came home to their first-floor apartment on Bodine Avenue early in the morning and caused a ruckus, police and neighbors said.

The third-floor neighbors came down to confront the brothers about an earlier fight when shots rang out at about 6 a.m., cops said.

Brown was struck in the back and Porter was shot in the stomach, police said.

EMTs rushed Brown to Richmond University Medical Center, but he succumbed to his wounds, cops said.

Porter was taken in a private car to the same hospital, where he was lissted in critical condition, cops said.

The shooter is still at large, police said.

Queens

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Two men are wanted for attacking an elderly man in Corona, authorities said.

The 70-year-old victim was on 46th Avenue near 111th Street at 5:20 a.m. on Nov. 24 when he was approached by two men in their early 20s, police said.

The thugs asked the man if he was Muslim or Hindu and then attacked him, cops said.

The victim was taken to Elmhurst Hospital, where he was listed in stable condition, police said.

The Bronx

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A gunman killed a foe in West Farms yesterday, cops said.

The 20-year-old victim, whose name was not released pending family notification, was shot several times in the leg and torso at about 9 a.m. on the 12th floor of a housing development on East 178th Street near Boston Road, police said.

He died at St. Barnabas Hospital.

It was not immediately clear what sparked the violence, but a police source said the victim had hostile relationships with several other residents in the development.